240                                                                                                                     Keysight N9927-90001 User’s Guide
IQ Analyzer (IQA) – Option 351 (CPU2 Only)
About I/Q Analyzer (IQA) Measurements
About I/Q Analyzer (IQA) Measurements
The I/Q Analyzer Mode makes general purpose frequency domain and time 
domain measurements. The mode enables two types of I/Q measurements: 
— frequency domain and 
— time domain measurements
In order to ensure consistent results between frequency domain and time 
domain, spectrum measurement and waveform measurement are based on the 
same I/Q acquisition. The following acquisition parameters are automatically 
calculated to satisfy these requirements:
1. RBW and IF BW specified in Spectrum measurement BW (BW 2
) menu.
2. Start time and Stop time specified in Waveform measurement Sweep 
(Sweep 3
) menu and IF BW specified in Waveform measurement BW  
(BW 2
) menu.
3. I/Q signal capture related parameters specified in the Measurement Setup 
(Meas Setup 4
) menu.
Some measurement parameters are auto-coupled and are not user-settable.